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' G; P. SHAVER.

MECHANICAL TELEPHONE SWITCH.

No. 365,868. Patent ed July 5, 1887.

,g JLC d o 6 C, a JV! 7 A m v 4 1-, 0L 5B' c d e 82 f UNITED STATES PATENT OFFICE.

GEORGE F. SHAVER,

OE NEXV YORK, N. Y., ASSIGNOR TO BENJAMIN P.

WHEELER, OF SAME PLACE.

MECHANICAL-TELEPHONE SWITCH.

SPECIFICATION forming part of Letters Patent N0. 365,868, dated July 5, 1887. Application died September 20, 1886. Serial No. 213,974. (No model.)

To ail whom it may concern.-

or connecting office.

' for use.

Be it known that I, GEORGE E. SHAVER, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improved Switching Apparatus for Mechanical-Telephone Wires, of which the following is a specification.

The object of my invention is an improved mechanical apparatus or switch, by means of which different mechanical-telephone wires may be connected andmade operative with ease and dispatch, as necessary in a central For this purpose I employ the apparatus shown in the accompanying drawings, of which- Figure 1 is a sectional elevation of my in vention. Fig. 2 is a plan view of the same. Fig. 3 is a front view of a detail.

The same letters refer to the same parts throughout.

In mechanical telephones when a person in one-place desires to communicate with some one at a distance it is necessary to make a connection'between the wires leading to the two places which shall make them act as one continuous wire. For this purpose the various wires of a telephone system are all led into a central or switching office, where their terminals are arranged and supported in a convenient position for connecting any two of them at will, giving them the proper tension Thus the various Wires are led to a large ring, A, of sufficient-strength to bear the necessary tension, and their ends or terminals a are passed through holding-blocks B, mounted in the ring A, and secured by means of collars a. The ring A consists of two parts separated and connected by means of the guides H ineasing the blocks B. These guides H are provided with pintles or sockets h h, for supporting the connecting apparatus when in use. The blocks B have a series of elastic wires, I), mounted upon their front surfaces, through the centers of which the linewires are passed, as shown in Fig. 3. In place of the wires 12 the block B may be provided with a rubber bushing, 12, which is protected from wear by a brass lining, b, as shown in Fig. 2. The terminal a is provided with a loop or hook, a, for attaching the connecting wire.

'tion with each other.

apply to both. Thus each consists of atube or The connecting apparatus or switchis duplex, consisting of two similar arrangements properly connected and working in conjunc- One description will guide, 0, having the necessary loops 0 for hooking it onto the pintles h, by which it is supported, and having secured upon its upper surface a straight rack of ratchet form, as shown at c. The tube 0 is also provided with a slot, 0". In the tube 0 is fitted to slide freely a rod, D, which has a lug or projection, d, which passes out through the slot 0. To the lug d is hinged a forked or double lever,- E, which passes up both sides of the tube 0, and carries two sets of pawls, e, as shown. The pawls e engage the ratchet 0, and their arrangement is such that when the lever E is moved one of the pawls ewill force the rod D out of the tube C, while the other pawl prevents its returning. The lever E is operated by means of the handle e, and connectingrods (2 and thumb-keys e are provided, by means of which the pawls e may be tripped and the rod slidback into the tube 0, when desired. At their outer ends the two rods D of the duplex system are secured together by alink, E, and hinge-joints f, which permit them to assume any angle in relation to each other. To the link F is secured a loop of wire or metal, f, attached to which is the equalizing-bar G. A rubber washer, g, is secured under the head of the attaching-wire 9. To each end of the equalizing-bar'G is secured a wire, 9 which is made of the proper length, and provided with a hook or loop, 9 by means of which it is connected to the terminal a of the desired line-wire.

When it is desired to connect any two linewires,the apparatus is hooked onto the proper pintles, h, the hooks g are connected with the terminals a, and the necessary tension given by means. of the levers E, making an effective apparatus, which may be readily changed from wire to wire, as the exigencies of the business may require.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-a 1. In mechanical-telephone switches, the block B, having the cross-wires b, in combination with the terminals a of the line-wires,

ber washer g, and wires when constructed and operated substantially as and for the purposes herein shown and set forth.

4:. In mechanical telephone switches, the combination of the equalizing-bar G and terminals a of the line-wires, when constructed and operated as herein shown and described.

Signed at New York, in the county of New York and State of New York, this 16th day of September, A. D. 1886.

GEORGE F. SHAVER.

Witnesses:

EDWARD XVoLFF, O. A. Mourns, 

